Updated ggsrun to v537

ggsrun was updated to v5.3.7. v5.3.7 (June 2026) - Simplified Quick Onboarding, On-demand Setup Prompting, Optional Credentials Path, and Seamless Configuration Initializer Introduced the groundbreaking, extremely easy-to-use $ ggsrun setup onboarding command to dramatically simplify Google Cloud API and OAuth2 credentials setup, while keeping traditional $ ggsrun auth fully intact for backward…